• Bacterial infections: Like UTIs, bacterial vaginosis, or jock itch.
• Yeast overgrowth: Especially in women, due to moisture and warmth.
• Skin irritation: Friction + sweat = chafing and rashes.
• Odor: Bacteria breaking down sweat can cause unpleasant smells.
• Body acne: Dirty fabric can clog pores and cause breakouts.

When Might It Be Okay?

Low-risk situations include:

• You didn’t sweat much.
• The underwear is clean cotton and breathable.
• You wore them briefly, like lounging at home.

Still, it’s best not to make it a habit.

Fabric Matters

• Cotton: Breathable and ideal for everyday wear.
• Synthetics: Trap moisture and heat — not great for repeat wear.
• Lace/Silk: Better for short use, not all-day wear.

If you must rewear, stick to dry, aired-out cotton.

Women vs. Men

Women are more prone to infections due to their anatomy. Men are more at risk for odor, jock itch, and chafing. Clean underwear benefits everyone — but for women, it’s even more crucial.

At Night? Go Commando

Doctors often recommend sleeping without underwear to reduce moisture and friction. If that’s not for you, wear loose, fresh cotton.

Better Habits, Healthier You

• Stock up on underwear so you never run out.
• Don’t delay laundry.
• Always change after workouts.
• Never rewear sweaty pairs.

Bottom Line

Rewearing underwear once in a while isn’t the end of the world — but doing it often can lead to infections, odors, and skin issues. Clean underwear isn’t just about feeling fresh — it’s about staying healthy. So, change daily. Your body will thank you.